*
  box-sizing border-box
.text-overflow
  overflow hidden
  text-overflow ellipsis
  white-space nowrap
a
  -webkit-tap-highlight-color rgba(255, 255, 255, 0)
  -webkit-user-select none
  -moz-user-focus none
  -moz-user-select none
a,a:hover,a:active,a:visited,a:link,a:focus
  -webkit-tap-highlight-color:rgba(0,0,0,0)
  -webkit-tap-highlight-color: transparent
  outline:none
  background: none
  text-decoration: none
input,textarea
  -webkit-tap-highlight-color:rgba(0,0,0,0)
  outline none
body
  font-family Microsoft YaHei
.position-center
  position absolute
  top 50%
  left 50%
  -webkit-transform: translate(-50%,-50%)
  -moz-transform: translate(-50%,-50%)
  -ms-transform: translate(-50%,-50%)
  -o-transform: translate(-50%,-50%)
  transform: translate(-50%,-50%)
.text-overflow
  overflow hidden
  text-overflow ellipsis
  white-space nowrap
.position-center
  position absolute
  top 50%
  left 50%
  -webkit-transform: translate(-50%,-50%)
  -moz-transform: translate(-50%,-50%)
  -ms-transform: translate(-50%,-50%)
  -o-transform: translate(-50%,-50%)
  transform: translate(-50%,-50%)